CN218649342U

CN218649342U - Biomass straw pulverizer

Info

Publication number: CN218649342U
Application number: CN202120103930.5U
Authority: CN
Inventors: 李正红; 王荣涛; 王立明; 王傲
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2023-03-21
Anticipated expiration: 2031-01-15

Abstract

A biomass straw pulverizer comprises two driving shafts, wherein a knife rest assembly and a space ring are alternately arranged on each driving shaft, and the knife rest assembly on one driving shaft is arranged opposite to the space ring on the other driving shaft; the tool rest assembly comprises a first blade, a tool rest, a tool bit and a second blade, the first blade and the second blade are respectively and fixedly arranged on two sides of the outer circumference of the tool rest, the tool bits are provided with a plurality of tool bits and are uniformly and fixedly arranged on the outer circumference of the tool rest, a space is reserved between every two adjacent tool rest assemblies on one driving shaft, and the corresponding tool bit on the other driving shaft can pass through the space; the first blade on one of the drive shafts cooperates with the second blade on the other drive shaft. The utility model overcomes prior art's is not enough, and the blade is many, and the moment of torsion is big, therefore output is very high to cutting speed is slow, is difficult for arousing the raise dust.

Description

Biomass straw pulverizer

Technical Field

The utility model relates to the field of machinary, especially, relate to straw crushing technique, specifically be a living beings straw rubbing crusher.

Background

Because the biomass straws are strong in toughness and light in weight, the problem of smashing is always a problem, particularly rice straws cannot be cut off by hammering smashing, the straws can be wound on a cutter, the smashing load is large, and the straws cannot be smashed basically. The biomass straw pulverizer in the current market is a roller blade type pulverizer, a motor generally drives a pulverizing roller, blades are installed on the roller, and the biomass straw is cut by the rotation of the blades. Because only a few knives can be arranged on the roller, the cutting and crushing efficiency is very low, the knife blade rotates at high speed all the time for cutting, the knife edge is abraded very fast, and the knife needs to be sharpened for several days. High-speed crushing dust is particularly serious due to high ash content of the straw.

In the existing shredder type crusher, the blades are of an integral structure, and the blade assembly needs to be replaced after being disassembled after the blades are worn, so that the cost is high, the replacement difficulty is high, and the time is long.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model provides a living beings straw rubbing crusher has overcome prior art not enough, and the blade is many, and the moment of torsion is big, therefore output is very high to cutting speed is slow, is difficult for arousing the raise dust.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a biomass straw pulverizer comprises two driving shafts, wherein a knife rest assembly and a space ring are alternately arranged on each of the two driving shafts, the outer diameter of the space ring is smaller than that of the knife rest assembly, and the knife rest assembly on one driving shaft is arranged opposite to the space ring on the other driving shaft;

the cutter rest assembly comprises a first cutter blade, cutter rests, cutter heads and a second cutter blade, the cutter rests are fixedly arranged on the driving shafts, the first cutter blade and the second cutter blade are respectively and fixedly arranged on two sides of the outer circumference of each cutter rest, the cutter heads are provided with a plurality of cutter heads and are uniformly and fixedly arranged on the outer circumference of each cutter rest, a gap is formed between every two adjacent cutter rest assemblies on one driving shaft, and the corresponding cutter head on the other driving shaft is arranged in the gap; the first blade on one of the drive shafts cooperates with the second blade on the other drive shaft.

Preferably, the outer arc surfaces of the first blade and the second blade are both arranged in a sharp-angled structure with an angle smaller than 90 degrees.

Preferably, a dovetail structure is arranged on the tool bit, and the tool bit is clamped on the tool rest through the dovetail structure and is fixedly connected through screws.

Preferably, the first blade and the second blade are respectively provided with a counter bore and a threaded hole on the surface, the positions of the counter bores and the threaded holes on the first blade and the second blade correspond to each other, and the first blade and the second blade are fixedly arranged on the tool rest through bolts.

Preferably, the tool holder and spacer ring transmit torque with the drive shaft via a polygonal connection.

The utility model provides a biomass straw pulverizer. The method has the following beneficial effects: the straw is pulled into a gap between the cutter rest assemblies on the opposite driving shafts through the cutter head, and the first blades and the second blades respectively positioned on the two driving shafts are overlapped to a certain extent, so that the first blades and the second blades respectively positioned on the two driving shafts correspondingly form an effect similar to scissors, and the straw can be cut off. Because the utility model discloses rubbing crusher's blade is many, and the moment of torsion is big, therefore output is very high to cutting speed is slow, and the raise dust that arouses is also very little.

Drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the middle blade carrier assembly of the present invention;

FIG. 3 is a plan view of the center rest assembly of the present invention;

the reference numbers in the figures illustrate:

1. a drive shaft; 2. a tool holder assembly; 3. a space ring; 4. a first blade; 5. a tool holder; 6. a cutter head; 7. a second blade; 8. a dovetail configuration.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.

As shown in fig. 1 to 3, a biomass straw pulverizer comprises two driving shafts 1, wherein tool rest assemblies 2 and spacer rings 3 are alternately arranged on the two driving shafts 1, the outer diameter of the spacer ring 3 is smaller than that of the tool rest assemblies 2, and the tool rest assembly 2 on one driving shaft 1 is arranged opposite to the spacer ring 3 on the other driving shaft 1;

the tool rest assembly 2 comprises a first blade 4, a tool rest 5, a tool bit 6 and a second blade 7, the tool rest 5 is fixedly arranged on the driving shaft 1, and the tool rest 5 and the spacer 3 are connected with the driving shaft 1 through polygons to transmit torque. The first blade 4 and the second blade 7 are respectively fixedly arranged at two sides of the outer circumference of the tool rest 5, the tool bits 6 are provided with a plurality of tool bits and are uniformly and fixedly arranged on the outer circumference of the tool rest 5, a gap is arranged between two adjacent tool rest assemblies 2 on one driving shaft 1, and the corresponding tool bit 6 on the other driving shaft 1 is arranged in the gap; the first blade 4 on one of the drive shafts 1 cooperates with the second blade 7 on the other drive shaft 1.

When the two driving shafts 1 work, the two driving shafts are respectively driven by two large motors or hydraulic motors to drive the speed reducer, so that low-speed large-torque driving is realized. The rotation directions of the two driving shafts 1 are relative rotation, the two driving shafts rotate from the outside to the middle, straws are pulled into a gap between the knife rest assemblies 2 on the opposite driving shafts 1 through the knife heads 6, and the first blades 4 and the second blades 7 respectively positioned on the two driving shafts 1 are overlapped to a certain extent, so that the corresponding first blades 4 and second blades 7 respectively positioned on the two driving shafts 1 form an effect similar to scissors, and the straws can be cut off and fall below. Because the utility model discloses a rubbing crusher's blade is many, and the moment of torsion is big, therefore output is very high to cutting speed is slow, and the raise dust that arouses is also very little.

In the embodiment, the first blade 4 and the second blade 7 are respectively provided with a counter bore and a threaded hole on the surface, the positions of the counter bores and the threaded holes on the first blade 4 and the second blade 7 correspond to each other, and the counter bores and the threaded holes are fixedly arranged on the tool rest 5 through bolts. Therefore, when the first blade 4 or the second blade 7 is damaged, the bolt is removed, and then the first blade 4 or the second blade 7 is replaced, and the whole tool rest assembly 2 does not need to be replaced.

In the present embodiment, the outer arcs of the first blade 4 and the second blade 7 are each provided in a pointed configuration of less than 90 degrees. Therefore, when the first blade 4 and the second blade 7 are acted by the tool bit 6, the first blade 4 and the second blade 7 can be attached to the tool rest 5 more tightly, so that a bolt for fixing the first blade 4 and the second blade 7 is not stressed, and the first blade 4 and the second blade 7 can be prevented from falling off due to the fact that the bolt is cut off by large shearing force.

In the present embodiment, the tool bit 6 is provided with a dovetail structure 8, and the tool bit 6 is clamped on the tool holder 5 through the dovetail structure 8 and fixedly connected through screws. When the installation, the dovetail structure 8 of tool bit 6 is installed in the dovetail groove of tool rest 5 both sides from the side to through the fix with screw, in the use, bear rotatory shear force through dovetail structure 8, the screw can not the atress, thereby can prevent that the screw atress fracture from causing tool bit 6 to drop.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a living beings straw rubbing crusher which characterized in that: the tool rest assembly comprises two driving shafts (1), wherein tool rest assemblies (2) and space rings (3) are alternately arranged on the two driving shafts (1), the outer diameter of each space ring (3) is smaller than that of each tool rest assembly (2), and the tool rest assemblies (2) on one driving shaft (1) are arranged opposite to the space rings (3) on the other driving shaft (1);

the tool rest assemblies (2) comprise a first blade (4), a tool rest (5), tool bits (6) and a second blade (7), the tool rest (5) is fixedly installed on the driving shafts (1), the first blade (4) and the second blade (7) are respectively and fixedly installed on two sides of the outer circumference of the tool rest (5), the tool bits (6) are provided with a plurality of tool bits and are uniformly and fixedly installed on the outer circumference of the tool rest (5), a gap is formed between every two adjacent tool rest assemblies (2) on one driving shaft (1), and the corresponding tool bit (6) on the other driving shaft (1) is arranged in the gap; the first blade (4) on one of the drive shafts (1) is matched with the second blade (7) on the other drive shaft (1).

2. The biomass straw pulverizer as claimed in claim 1, wherein: the outer arc surfaces of the first blade (4) and the second blade (7) are both set to be sharp-angled structures smaller than 90 degrees.

3. The biomass straw pulverizer as claimed in claim 1, wherein: be provided with forked tail structure (8) on tool bit (6), tool bit (6) pass through forked tail structure (8) joint on knife rest (5) and through screw fixed connection.

4. The biomass straw pulverizer as claimed in claim 1, wherein: the surface of the first blade (4) and the surface of the second blade (7) are respectively provided with a counter bore and a threaded hole, the positions of the counter bores and the threaded holes on the first blade (4) and the second blade (7) correspond to each other, and the first blade and the second blade are fixedly arranged on the tool rest (5) through bolts.

5. The biomass straw pulverizer as claimed in claim 1, wherein: the tool rest (5) and the space ring (3) are connected with the driving shaft (1) through a polygon to transmit torque.